Paper-making machine



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" S. N. MILLER.

v PAPER MAKING MACHINE.

Patented Apr. 26, 1898.

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UNITED STATES PATENT OFFICE.

SEBASTIAN N. MILLER, OF PIEDMONT, WEST VIRGINIA.

`PAPER-MAKINGfMACHlNE.

SPECIFICATION forming part of Letters Patent No. 603,197, dated April26, 1898.

l j Application-filed June 3, 1897. Serial No. 639,235. (No model.).

T a/ZZ whom it may concern.' g

Be it known that I, SEBAsTIAN N. MILLER, of lPiedmont, in the county ofMineral vand State of West Virginia, have invented a new and usefulImprovement in Paper-Making Machines, of which the following is aspecification.

My invention is an improvement in papermaking machines, and particularlyin the guard-board mechanism; and the invention consists in certainnovel constructions and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the drawings, Figure l is a front view, and Fig. 2 a side view, of apart of a machine provided with my improvements. Fig. 3 is an enlargedfront viewl of a part of the improved guard-board. Y, Fig. 4 is a topplan view thereof; and Figs. 5 and 6 are cross-sections on,respectively, lines 5 and 6 6 of Fig. 3.

The rollerA is the ordinary top couch-roller of a Fourdrinier machine,and it may be supported in any manner desired. The ordinary guard-boardB is preferably used asa support for the improved guard-board, becauseit facilitates the application of the improvement to the machines now inuse; but manifestly the improved guard-board may be supported on anyother part of the framing of the machine without departing from theprinciples of the invention.

The improved guard-board comprises the casing C, usually of metal,having in its under side the socket D, opening toward the vtopcouch-roll and extending from end to end of the casing and open at itsends. has holes E, located above the socket D and between the set-screwsG, for the screws or bolts F, by which it is secured to the board B orother support, and is provided in its top at intervals, usually of abouteight inches, with threaded openings for the set-screws G, which projectinto the socket D and bear upon the guard-board strip. II. The casingholds the strip firmly in place, while the screws, being arranged inclose relation, operate to set any portion of the strip down to thecouchroller and relieve pressure on the strip at any other portion orportions desired, By this construction if a strip of paper is being madeof less than the full width of the machine pressure need be supplied tothe guard-board This casing strip only to the extent of the width of thepaper, the rest` of the strip being left free of pressure, avoiding wearon the roller, which roller is covered with a Woolen jacket. The useof'this improved guard-board will save ifty per cent. of Wear upon thesaid jacket and also on the strip and will at the same time secure aneven pressure of just the degree desired. By the use of a thinWaterboard strip the same when worn can be easily replaced at a smallcost and can be replaced without stopping'the machine, it being onlynecessary to ease up the pressure-screws, slip the worn strip endwiseout ofthe casing, and insert another strip in its place, whichcan bedone by inserting the strip endwise into the casing beneath thepressure-screws,which may be then'adjusted to secure the desired tensionat every point along the guard-board strip. v As best shown in Figs. 5and 6, the front wall of the casing terminates at its free edge `abovethat of the opposite or rear wall. The purpose of this is to permit theuse of the casing in an approximately vertical position when so desiredinstead of -in the inclined position shown in' Fig. 2, as is sometimesdesirable. It will be seen that if the casing be arranged vertically andits front wall be of the same length as its rearpone it will beimpracticable to set such rear wall close to the couch-roll Withoutcausing the front wall to bind upon such roll. It is to avoid thisbinding that I form the front wall as shown and before described.

By the use of the cross-beam as a support for the casing I secure adouble advantage by providing a support to which the casing may vbesecured at one side, so its ends are open and unobstructed, and byenabling the casing to be secured at close intervals to the supportthroughout its length in order to avoid any springing orbending of thecasing and so hold the strip properly to its work.

Having thus described my invention, what I claim as new, and desire tosecure by Letters IOO and open at the end and unobstructed at such endwhereby the guard-board strip may be inserted in and removed endwisefrom said casing, the guard-board strip, the pressurescrews engagingsaid strip, and a support for the said casing, which support forms noobstruction to the open end of the casing substantially as described.

2. The herein-described improvement in paper-machines consisting of thetop couchroll, the beam extending longitudinally above the said roll,the casing having in its under side a recess opening toward said rolland open at the end and unobstructed at such end whereby the guard-boardstrip may be inscrted in and removed endwise from said casing, the guardboard strip, the pressurescrews engaging said strip, and fasteningssecuring said casing, at close intervals to the beam whereby to preventany springing of the casing toward or from the roll and whereby thecasing is secured in such manner that its open end is left unobstructedfor the endwise insertion and removal of the guard-board stripsubstantially as shown and described.

3. The improvement in paper machines herein described comprising the topcouchroll, the beam extended above said roll in the direction of lengththereof, the casing having in its under side a recess open toward thetop couch-roll and open at its end, said casing being provided in itstop with openings for the set-screws and having above said recess andbetween the set-screw openings transverse holes for the fastening-bolts,the fastening-bolts securing the casing to the beam and passed throughsaid transverse openings in the casing whereby the casing is secured atclose intervals and its end is left unobstructed, and the guard-boardstrip and setscrews substantially as shown and described.

SEBASTIAN N. MILLER.

Witnesses:

JAS. L. LUKE, OTTO BALKE.

